Do eating disorders during puberty affect the development of sex organs (i.e. penis)? i had a mild eating disorder between the ages of 14-15, where i was at 44kg at 53. would this have affected the development of my penis given low testosterone?

I don't think that your weight was low enough to induce a testosterone deficiency during the ensuing years. Do you have signs & symptoms of testosterone deficiency? Has the level been tested? If you're concerned about the size of your penis, go by the size during erection. The average is a shade over 5 inches. If you still have concerns, consult an endocrinologist or a urologist for evaluation&adv